package com.changgou.file.controller;

import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.file.util.FastDFSClient;
import com.changgou.file.util.FastDFSFile;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/file")
public class FileController {

    @PostMapping("/upload")
    public Result uploadFile(MultipartFile file) {
        try {
            //判断文件是否存在
            if (file == null) {
                throw new RuntimeException("文件不存在");
            }
            //获取文件的完整名称
            String originalFilename = file.getOriginalFilename();
            //判断文件名是否为空
            if (StringUtils.isEmpty(originalFilename)) {
                throw new RuntimeException("文件不存在");
            }
            //获取文件的扩展名称  abc.jpg   jpg
            String extName = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
            //获取文件的内容
            byte[] fileBytes = file.getBytes();
            //创建文件的上传封装实体类
            FastDFSFile fastDFSFile = new FastDFSFile(originalFilename, fileBytes, extName);
            //基于工具类进行文件上传,并接受返回参数  String[]
            String[] upload = FastDFSClient.upload(fastDFSFile);
            return new Result(true, StatusCode.OK,"文件上传成功",upload);
        } catch (Exception e) {
            e.printStackTrace();
            return new Result(false, StatusCode.ERROR,"文件上传失败");
        }
    }

}
